Things I've Learned from Star Wars (sort of)
There are such things as the light side and the dark side. However, it's not quite as black and white as the story makes it out to be. There is a massive grey area. And the choices we make do affect our destiny. I also believe we each have destinies (yes, I meant for that to be plural). I don't necessarily think that there is one absolute destiny, but rather several different ones depending on what we do.
I consider myself to be a good person. If I were a Jedi, I'd definitely say I served the light side. However, there are a good number of things that I want and desire that I shouldn't. And these things I can never have. It's not that I physically couldn't obtain them, mind you, but rather that I lack the conscience to do so. Yet I still want them, some of them quite badly. It's just the path I've chosen. I've lived my life in a way that I know I could never have these things, simply because most of them are so bad...
I understand now why we can't "go back" with the knowledge we have now. Though we could make things very very different, it just wouldn't be fair. Not only to ourselves, but to others.
I disagree with the "Jedi" ideal of no emotion. After all, for the Jedi to be the selfless servants that they claim to be intrinsically requires a great deal of emotion: compassion, sympathy, and so on. I personally believe that total lack of emotion is more dangerous.
I'm not sure what inspired me to think of these things, but my thoughts go much deeper than the few ideas and examples given here. If I can manage to put more of these thoughts into words, or if I can word these better, I will post more on the subject.